论文标题
PDCRO $ _2 $的偏斜频带结构和异常电导率
Skew band structure and anomalous conductivity of PdCrO$_2$
论文作者
论文摘要
提出了PDCRO $ _2 $的CRO $ _2 $和PD六角层的磁相互作用模型。由于CR-O-PD桥在120 $^0 $磁性订购的情况下不提供层间磁耦合，因此假定磁性铬离子与导电钯层之间的直接交换相互作用。结果表明，这种相互作用导致了巡回电子的新型状态（偏斜频段）。由于强烈抑制umklapp electron-phonon散射，其特征是在低温下的电导率异常高。
A model of magnetic interaction of CrO$_2$ and Pd hexagonal layers in PdCrO$_2$ is proposed. Since Cr-O-Pd bridges do not provide an interlayer magnetic coupling in case of a 120$^0$ magnetic ordering, a direct exchange interaction between magnetic chromium ions and conductive palladium layers is assumed. It is shown that this interaction leads to a novel state of itinerant electrons (skew bands). It is characterized by abnormally high conductivity at low temperatures due to strong suppression of umklapp electron-phonon scattering.
